From patchwork Mon May 7 21:16:47 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [v3,3/3] ARM: imx: Add imx6q cpuidle driver X-Patchwork-Submitter: Robert Lee X-Patchwork-Id: 157472 Message-Id: <1336425407-20308-4-git-send-email-rob.lee@linaro.org> To: kernel@pengutronix.de Cc: linaro-dev@lists.linaro.org, patches@linaro.org, daniel.lezcano@linaro.org, linux-kernel@vger.kernel.org, amit.kucheria@linaro.org, jj@chaosbits.net, shawn.guo@linaro.org, linux-arm-kernel@lists.infradead.org Date: Mon, 7 May 2012 16:16:47 -0500 From: Robert Lee List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org Add basic imx6q cpuidle driver. For now, only basic WFI state is supported. Deeper idle states will be added in the future. Signed-off-by: Robert Lee --- arch/arm/mach-imx/mach-imx6q.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index da6c1d9..4fc1fe7 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -10,7 +10,9 @@ * http://www.gnu.org/copyleft/gpl.html */ +#include #include +#include #include #include #include @@ -21,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -28,8 +31,10 @@ #include #include #include +#include #include + void imx6q_restart(char mode, const char *cmd) { struct device_node *np; @@ -86,6 +91,19 @@ static void __init imx6q_init_machine(void) imx6q_pm_init(); } +static struct cpuidle_driver imx6q_cpuidle_driver = { + .name = "imx6q_cpuidle", + .owner = THIS_MODULE, + .en_core_tk_irqen = 1, + .states[0] = ARM_CPUIDLE_WFI_STATE, + .state_count = 1, +}; + +static void __init imx6q_init_late(void) +{ + imx_cpuidle_init(&imx6q_cpuidle_driver); +} + static void __init imx6q_map_io(void) { imx_lluart_map_io(); @@ -142,6 +160,7 @@ DT_MACHINE_START(IMX6Q, "Freescale i.MX6 Quad (Device Tree)") .handle_irq = imx6q_handle_irq, .timer = &imx6q_timer, .init_machine = imx6q_init_machine, + .init_late = imx6q_init_late, .dt_compat = imx6q_dt_compat, .restart = imx6q_restart, MACHINE_END